You need to get the build-dependencies for QUCS which includes admsXml''. You can start-off by patching the debian source which is easier to accomplish as it includes those as prebuild maintainer-files: sudo apt-get build-dep qucs, apt-get source qucs and continue to patch in ./qucs-0.0.11/qucs-core
Note: the patch is just a quick hack and experiment: The one to be thrown away.

Save the stanza above as bandpass.txt copy an audio-file to slin5s48k_F.wav in the same folder. Executing qucsator -i bandpass.txt will write sw4.wav: a 3 channel audio-file corresponding to the voltages on _net0_net1 and sound